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N-acetylcysteine (NAC) is the most well-established precursor, supplying cysteineoften the rate-limiting amino acid in glutathione production
If you cant avoid pollution (like city traffic), consider taking more frequent treatments
Neither is universally "better"-they are related copper peptides with similar roles in collagen and repair
However, we always recommend checking with your healthcare professional regarding your personal situation
When these cells proliferate and stay healthy, hair grows thick and strong
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